This is a replacement and minor re-design for a switch cover on a Treva 10" desktop fan. One of the retention tabs on mine broke, it's fairly weak on one side so I beefed that side up a little bit. There's still a little bit of slop/play that could be fixed but it works fine.
I decided to keep the raised circle in the middle to make it easier to switch on/off which requires supports on the bottom layers. In retrospect I should have redesigned this so it prints a little prettier but it's not terrible.
The author marked this model as their own original creation.